Valve shield



June 7,5192?.

. M. SULLIVAN- VALVE SHIELD Filed Dec; 16', 1925 2 SheetsfShet 1 HIIIILIIII Maurice u'moam. wvmm WHY-messes I www a@ W y June 74,-;1927.

faf y l 1,631,438 M. SULLIVAN i VALVE SHIELD y Fil'c Deo. 16.l 1925 i 2Sheets-Sheet 2 l; f la Maurice Sullivan, gwwmo@ attentats valvesniountednpon' boilers and the like and"` arranged so Aas'to `enclose thevalve structure and preventdania'ge'from the essas to prevent PatentedJune 17,

Mannion SULLIVAN, or BROOKLYN, :NEW vom;

-Appn'uon mea'necenber 16,1925, semina 75,811;

' Thekv presentinvention' relatesV Ato 4an iniproved valve attachmentand has particular' valves andthe-like andint'eded' to conv fine4tlieactivity of the 'escaping'steain so injury thereby tothe boilercovering. 'f'

A further objectoi" theinvention vthe provision' 'of a shieldyattachment designed ,to be, readil'yfmounted in a'ssoci'ation withcaping steam.

'the provision of housingadapted to' substantially cover the valvestructure `and havf inglneans'iorthe lconnection of a conduct-1V ing,pipe adapted to'conduct thesteani esicapi-ng from the :valveorcondensation toal vsuitable reservoir.

fA'st-'ill further object 'of :the invention the 4provision of anattachment of the above character .designed to be lcomparatively part ofthis specilioation Vand 1n which like v l ,niefralld generally vdesignates ,the lovversection ofliny vimproved'valve Shield o-rlions-7:,

sirnple yet durable of construction andl vvliich maybeconveniently-mounted about a valve.,

ther 'objects and advantages .of the in ve'n'tion'will becomeappa'rentasftlie descrip?` tion progresses.

In the accompanylA reference ,cliaracters `are employed to; ignatecorresponclinglparts throughoi'it the saine:

"ment comprising my invention Vshov'vn associfated with a boiler safetyvalve,. showing;

` the portion of a' boilerin cross section,

vture embodying inyinventi'on, i

Figure -3' is a transverse sectional vieiv taken on .theline 3 3 ofAFigure l,y

MFigure 4 is a vertical transverse sectional; View takenonthe line HotEigureqQ, and

Figure; 5V is a front elevational view et the assembled structure`forming my invent-ron, In thefdrawingsfxwherein for the purpose of aconventional type of steam boiler,-par

A sait further "Object or Y uit mennen Y r3:

ng drawings 'forming Figure I isa sde'elevation of 'the attach-`lligureQQ` is' a topplan 'view ,ofithelstruc-- ticularly the type.conirnonly employed in locomotive construction. "This boiler is-proivided with a flanged internally screw threaded opening' 11 `adapted forconnection; of a suitable valve such as a `safety valve or the like.'These boilers are usually covered with a jacket A l2 of asbestos orother heat insuer y I 'y eoA latingniaterial in order -to preventunnecessary radiation of jlieateas vfar vas possible. As willbeunderstood by those familiar With ythe art, boilers, especiallylocomotive boilers, carry on 'the upper portions thereofsteam` valveslofl various types, known .as Whistle valves, Yand safety vvalve s,',thislatter type being manuallyV 0r autoniatically operated toy 'relieve'thejboiler when the vsteam pressure therein has reached an excessivedegree.'

Upon operation of these valves',.the escaping i steam `frequentlycontacts lWith the boiler Jaclretor coverlngand causes'vrap'id deter1`ovent theescaping steaml contacting with the b'oil'er'j'acketso as'toquickly destroy this )rotectivecoverino. A common forni of safetyvalve oi the type commonly employed upon locomotive boilersisco-n'rventiona'llyshown at 13," this Avalve being usually .co-n! nectedby a nipple with the flanged opening 1l of the boiler, or inountedon anauxiliary steain, dome` formed on the boiler, forth-is purpose WReferring now Lwith particulai-ity tothe rationthereo'l.- With this in1nind,"niy in-V vention relates particularly tothe..provisionstructureembodying iny invention, thel n uthe top and rounded at the' lower edge,Formed on the bottoni. of thislower section lll ,and depending.downwardly' 'fro-1n the cen-- terthereofvis aboss l5l preferably ofhexagonal formation, the purposey of which will The be described moreiully hereinafter.y

*Thesell sections arefdesignedto be re"-v inov'abl'y connected`r andpartially enclose the Vith reference V to nthe 10o of a cylindricallreceptacle entirely open at.

central portion of this lower section is provided with an interiorvertically extending valve. supporting. tube lool cylindrical formation,the lower `endol' this tube being formed integrally vwith thebottoin oftheV l section while the upper extremity terminates slightly below theupper edge of the section. In order that the section may be securelymounted in position upon a boiler and also permit connection of thevalve structure the lower central portion of the housing section 14 isprovided with an internally screw threaded opening extending through theboss 15 which thereby provides a suitable connection flange. The upperextremity of the valve supporting tube 16 is likewise provided with aninternally screw threaded opening adapted to permit connection of avalve. The lower end of the section 14 is provided with a laterallyextending routlet nozzle ,17 provided with an internally screw threadedbore for connection with a suitable con-y ducting pipe 18. From theforegoing description, it is apparent that this lower housing section 14embodies a receptacle of cylin- `drical formation provided with meansfor connection .on a boiler at the lower end. connection for a valve atthe upper central portion and means for securing at the lower portion aconducting pipe communicating with the interior of the receptacle andarranged to conduct the exhausted steam or condensationl from thehousing.

Referring now to the structure of the up per complementary section 15,it will be noted that this section is in the form of a substantiallysemi-spherical cover, the diameter of the sidewalls thereof beingdesigned to permit telescopic connection of these sections. This coversection is provided with an annular flange 19 extending laterally fromthe body of the cover section and disposed somewhat above the lower openend thereof. .This flange is arranged so as to tightly'fit upon theupper edge of the lower section 14 for connection of the sections. Theupper end of the cover section 15 is provided with a somewhatreduced'opening 20 about which is formed a raised reinforcing ring 21.Formed on the side of this upper section and extending diametricallyfrom the upper'central opening 20 to the annular lflange 19 is a raisedreinforcing` rib Q2, the upper portion being provided with a cenu tra]vertically extending slot 23, communieating with the central opening 20.This structure will permity the upper extremity of the boiler valve 13yto project slightly through the upper portion of the cover sec-Vy tionand permit the projection of the mov'- able valve operating arm carriedthereby.

It is evident, from the foregoing description and the drawings, that a.separable hous- .ing structure is provided, arranged so as to beconveniently mounted on a'boiler so as to generally enclose the valvestructure mounted thereon and designed to permit unrestricted operationof the valve when necessary; These housing sections are preferablyformed of cast metal, such as steel and are designed to be durable andreadily separated for disconnection of the valve.

tube 16 by the use of a second nipple 25,'

and the valve mounted in anelevated posi* tion thereon. been securelymounted in position, the upper cover section 15 is placedin position onthe lower section, the connecting portions of the sections beingproperly machined to per.V mit a tight sliding connection. Thus theboiler valve will be mountedin la comparatively elevated position on theboiler and encased bythe housing sections. When the boiler valve 13 isoperated, a portion of the steam released thereby will escape throughthe upper open portion of the upper hous ing section, and the remainderofthe steam will be condensed in the housing. The

steam' which does not pass upwardly to the,

upper end of the housing will be conducted through the pipe 18 to asuitable condenser` or reservoir. The'escaping steam, however, will beprevented from contacting with the boilerjaclret or covering 12 so as tocause rapid deterioration of the jacket about the valve connection. Itis readily conceivable,

After thesel members have loo that this will retain the boiler-,covering1nA uniform .conditi-on and considerably reduce the cost of retainingthe boiler in a properly covered condition. The utmost eliiciencyv ofthe boiler will also beretained in this manner, as the destruction ofthe boiler c-overing by the escaping steam impairs the insulafi tioneffect of the covering and causes considerable loss of heat. It istherefore believed apparent, that the present invention provides aVstructure which will be found extremely advantageous upon locomotivesand similar boiler structures and thus creates substantial advancementin the art to which it appertains.

' It is to be understood that the form of my invention herewith shownkand. described is susceptible of modification and Vthat minor changesmay be resorted to without departing from the vspirit of the inventionor the scope of the subjoined claim.

Having thus described my invention, l claim: r

A shield for steam valves comprising a lower housing section ofsemi-spherical formation open at its upper end andV formed with arestricted opening at its lower end adapted to engage a support member,a valve supporting tube formed integral with and centrally in said lowersection and provided with a screw threaded opening at its upper. end toaccommodate ay valve, a later-k ally extending;1 drain nozzle formed atthe lower end of the said section, a complementarycover section of'semi-cylindrical for mation adapted to be telescopcally fitted in theupper edge of the rlower section and having an annular flange formedadjacentl its lower edge resting on the upper edge of the lower section,a steam yescape opening,1

formed at the upper edge of the said cover Y section, and an arcuateslot formedin the, side of theupper section communicating with ltheopening adapted'tovaccommodatea Valve operating lever.

In testimony whereof I aIiX my signature.

' MAURICE SULLIVAN.

